@dimitris I am also on an 11 gen, so it may be related. When I first installed back in 2021, I read through several different guides here, since none were specific to Slackware, and I think one of them had recommended setting ‘disable_11ax=Y’ to deal with an issue with the wifi card failing to start on resume from suspend. This year I was looking at the archwiki page for the Framework to see if I could get any new info, and the errata in one section seemed to indicate that this might not need to be set any more with a recent kernel and firmware bundle.
I tried unsetting it to test, and it seemed to work fine when resuming, but then my connection completely dropped out while I was compiling libreoffice ('cuz Slackware), and I couldn’t get it to reconnect without reloading the iwlwifi and iwlmvm modules. After that, I took a look at the module parameters, tried explicitly setting the amsdu_size according to the recommendations, and it seems to be working fine thus far (I have done a couple recompiles of both libreoffice and Firefox since then).
That’s what I recall, although I admit I am fuzzy on the details regarding my initial setup. I should probably make a better effort of taking notes on what I have set and when 