diff --git a/ansible.cfg b/ansible.cfg
index fd63fbd..56bf283 100644
--- a/ansible.cfg
+++ b/ansible.cfg
@@ -1,4 +1,2 @@
 [defaults]
-nocows = True
-stdout_callback = yaml
-retry_files_enabled = False
+nocows=True
diff --git a/host_vars/localhost.yml b/host_vars/localhost.yml
deleted file mode 100644
index 578ca52..0000000
--- a/host_vars/localhost.yml
+++ /dev/null
@@ -1,41 +0,0 @@
----
-# note: 'gpu_*' vars only apply with the 'custom' suffixed profiles created by this tooling
-# profiles based on the 'default' amdgpu power profile mode use default clocks
-#
-# the connected AMD GPU is automatically discovered - assumes one
-# on swap to other AMD cards to avoid instability:
-#   'rm -rfv /etc/tuned/*amdgpu*'
-#
-# default 500, for best performance: near maximum. applies with 'overclock' tuned profile
-gpu_clock_min: "500"
-
-# gpu_clock_max: "2675" # default somewhere around 2529 to 2660.
-gpu_clock_max: "2750"
-
-gpumem_clock_static: "1075"
-
-gpu_power_multi:
-  default: 0.869969040247678 # 281W - real default
-  # overclock: 0.928792569659443 # 300W - slight boost
-  overclock: 1.0 # 323W - full board capability
-# optional, applies offset (+/-) to GPU voltage by provided mV
-# only counts for peak and overlock profiles
-#      gpu_mv_offset: "-20"
-
-gpu_mv_offset: "+125" # add 125mV or 0.125V
-#      gpu_mv_offset: "+50" # add 50mV or 0.05V
-#      gpu_mv_offset: "+75" # add 75mV or 0.075V
-# '-50' undervolts GPU core voltage 50mV or 0.05V; untested - here be dragons/instability
-
-# optional kernel parameters to set as well
-sysctl:  # quote ints/cast to string to avoid surprises
-  kernel.dmesg_restrict: '0'  # allow regular users to see the kernel ring buffer
-  net.core.default_qdisc: fq  # congestion control
-  net.ipv4.tcp_congestion_control: bbr2  # cong. control part 2
-  net.core.rmem_max: '33554432'
-  net.core.wmem_max: '33554432'
-  dev.raid.speed_limit_min: '2000000'
-  dev.raid.speed_limit_max: '6000000'
-  vm.compaction_proactiveness: '30'  # improve THP allocation latency, compact in background
-  vm.page_lock_unfairness: '1'  # make page lock theft slightly more fair
-  vm.max_map_count: '1048576'  # allow some games to run (eg: DayZ)
diff --git a/inventories/localhost.yml b/inventories/localhost.yml
index bf2a06e..16c7496 100644
--- a/inventories/localhost.yml
+++ b/inventories/localhost.yml
@@ -1,5 +1,5 @@
 ---
 lab:
   hosts:
-    workstation:
+    localhost:
       ansible_connection: local
diff --git a/playbook.yml b/playbook.yml
index ca760bd..eec99dd 100644
--- a/playbook.yml
+++ b/playbook.yml
@@ -5,6 +5,26 @@
     # role prepares/modifies 'tuned' with AMD GPU power/clock parameters
     # creates a new tuned profile made for each permutation of (base) 'tuned' profile + AMD powerplay profile
     - role: tuned_amdgpu
+      # note: 'gpu_*' vars only apply with the 'custom' suffixed profiles created by this tooling
+      # profiles based on the 'default' amdgpu power profile mode use default clocks
+      #
+      # the connected AMD GPU is automatically discovered - assumes one
+      # on swap to other AMD cards to avoid instability:
+      #   'rm -rfv /etc/tuned/*amdgpu*'
+      gpu_clock_min: "750" # default 500, for best performance: near maximum. applies with 'overclock' tuned profile
+      gpu_clock_max: "2675" # default somewhere around 2529 to 2660
+      gpumem_clock_static: "1075"
+      gpu_power_multi:
+        default: 0.869969040247678 # 281W - real default
+        overclock: 0.928792569659443 # 300W - slight boost
+#        overclock: 1.0 # 323W - full board capability
+      # optional, applies offset (+/-) to GPU voltage by provided mV
+      # gpu_mv_offset: "-25"
+      # gpu_mv_offset: "+50" # add 50mV or 0.05V
+      gpu_mv_offset: "+25" # add 25mV or 0.025V
+      # '-50' undervolts GPU core voltage 50mV or 0.05V
+      # mostly untested, there be dragons/instability
+      #
       # list of source tuned profiles available on Fedora (TODO: should dynamically discover)
       base_profiles:
         - balanced
diff --git a/roles/tuned_amdgpu/templates/tuned.conf.j2 b/roles/tuned_amdgpu/templates/tuned.conf.j2
index a10ec3e..729e025 100644
--- a/roles/tuned_amdgpu/templates/tuned.conf.j2
+++ b/roles/tuned_amdgpu/templates/tuned.conf.j2
@@ -2,16 +2,35 @@
 include={{ item.1 }}
 summary={{ item.1 }} + TCP/RAID tweaks + AMDGPU {{ item.0 }}
 
-{% if sysctl is defined %}
 [sysctl]
-{% for _sysctl, value in sysctl.items() %}
-{{ _sysctl }}={{ value }}
-{% endfor %}
+# allow regular users to see the kernel ring buffer
+kernel.dmesg_restrict=0
+net.core.default_qdisc=fq
+# 'bbr2' requires a [modified] supporting kernel - stock Fedora kernels do *not* support it (currently)
+#    eg: 'kernel-xanmode-edge' from COPR 'rmnscnce/kernel-xanmod'
+net.ipv4.tcp_congestion_control=bbr2
+net.core.rmem_max=33554432
+net.core.wmem_max=33554432
+dev.raid.speed_limit_min=1000000
+dev.raid.speed_limit_max=6000000
+# improve THP allocation latency, compact in background
+vm.compaction_proactiveness=30
+# make page lock theft slightly more fair
+vm.page_lock_unfairness=1
+# allow some games to run (eg: DayZ)
+vm.max_map_count=1048576
 
-{% endif %}
 # reference/execute AMDGPU control script
 # used because some sysfs interfaces are transactional
 # cannot be set by a single param in 'tuned'/[sysfs]
 [gpuclockscript]
 type=script
 script=${i:PROFILE_DIR}/amdgpu-clock.sh
+
+# for SSDs with no RPM, set no IO scheduler
+[ssdnosched]
+type=disk
+devices_udev_regex=(ID_ATA_ROTATION_RATE_RPM=0)
+# elevator=none
+elevator=kyber
+# elevator=mq-deadline