FYI, I completed an evaluation between win10 driver 18.6.1 vs 19.4.2. Found no hashrate/power draw difference with TRM 0.4.4 miner. Evaluated on CNR algo only.
Did you try with the new mode 16*14 , use * instead of + for the new mode.
I got a 15% hashrate increase for 7% more power.
I haven't had the time to do any mem tweak yet. Will do it once I have more time at my hands