Topic: Is my PS3 fully cooked?

There's probably a ton of people asking these kind of questions all the time without having done any work or research, but I've tried a lot of things so bear with me.

I have a PS3 slim, I've owned it since I think 2011. It got a moderate amount of use for around 2-3 years, then I moved on to PC. A little under 6 months ago, I decided to crack the PS3 out again for the nostalgia. The 2 games I tried first were Skate 3 and Midnight Club LA (two of my faves). I was having specific weird issues with both. For Skate 3, when going too fast between areas, the game screen would go black. Sometimes it would freeze my character aswell, then unfreeze, sometimes it would keep playing while the screen was black then eventually show picture again once I had crashed/ slowed down. On Midnight Club, the game would simply just freeze after around 1-2 hours of play and then freeze much faster if I turned it off then started playing again (20 mins or less to freeze). When the freeze happened, the PS3 seemed the same (i.e. no flashing lights, PS3 still on with green light, no weird noises), and the only way I could start it up again was by holding down the power button for 10-20 seconds. I then tried out Red Dead and got a similar issue to MCLA where the game would just freeze (no audio, no controller input). I also tried out NFS Hot Pursuit, I was just having the standard game freezes, but also started to have an issue where the map wouldn't load properly and I would just free fall for 10-20 seconds until the map loaded in properly.

I assumed this was probably a hard drive issue after some research, but I also cleaned out the inside of the PS3 and replaced the thermal paste. I swapped the old hard drive for a 240 GB ssd. Nothing at all has improved, the games still freeze in the same ways. Is my PS just completely cooked? At this point I feel like it could be a ram or cpu issue. It seems like its pretty hard to replace other components so is it just time to buy a new PS? Thanks

Just to note, I have tried reformatting the drives, updating software, restoring the PS3 etc. Someone suggested it could be an issue related to disc reading, but that doesn't seem like the case to me since the games start up and play fine for a small amount of time (generally 30mins - 1hour) and then I start experiencing the issues.

Are any of the mentioned games mentioned in the second paragragh digital (not read off a disc)? Additionally, if it's still an overheating issue, trying to get yourself into a game that gets the console going but at the same time isn't loading new assets (e.g. idling for 2-3 hours in a busy street).

Lastly (and hopefully not the case), it very much still could be blu-ray drive but usually those things are quite obvious. Most of the time, they either work or they don't. I'm also working off the assumption that your physical games are in good condition.