I am typing from my A750 LE system. Not having a 3rd party card, using it purely for gaming, interwebz, and media, my experience is different for certain. No webcam and multi monitor here.
I always click on the clean install option when installing drivers. It takes a little longer than upgrading. The process has nerfed a few times over the months. Cure is simple, no DDU, I just click on the installer again and this time choose repair.
Other than the menu bug in Starfield, performance in everything just keeps getting better. Have not had to use DXVK to fix a game since last year, but to be fair, others have reported some still require it. Batman Arkham Knight among them.
The BiFrost app works with all ARC cards which is cool. ETAPrime has used it in recent videos if anyone is interested in its usage. I don't use it, as I don't do anything beyond min max of the power target depending on my needs. Maxing turned in legendary scores on a couple of 3DMark tests.
Bummer about needing to support the GPUs themselves due to things like the HDMI signal conversion. I feel certain series B will have none of these issues. TAP said part of the team is already hard at work on drivers for it, so I expect it to come out of the corner throwing bombs on both team green and reds' chins in the high volume mid to lower priced tiers. Or to stay with my Gandalf schtick: Have their ruin smote upon the mountainside. ☠️ I can dream...