Tried the hotfix and the game still spikes at random times like before. There doesn't seem to be an improvement, at least on my part :/

Don't have textures or models popping up or slowly loading like others, but then again I didn't had that even before RC. Just the slowdowns and lag spikes.

Uploaded my DxDiag (number 3).

Before 1.48, game ran smoothly and rarely went under 30 FPS. And although I am not experiencing these texture/meshes popups like others, I now have these annoying, non-stop lag spikes and slowdowns that happen randomly (or every 3rd minute or so) and usually last for a few seconds before going back to my normal FPS for a short time. Rinse and repeat. And that's in Singleplayer (campaigns, scenarios, editor).

Tested with both mods and no mods, killed Battleye, antivirus and most processes in the background, made sure I have enough space on HDD, workshop wasn't running and my laptop is clean of any malware/viruses.

Still keeps happening (even on an completely empty Stratis island in editor).