@Kball1995 : These are just guesses. The valve body could be gunked up. And if it is gunked up with metal shavings, then you could have something failing in the transmission.
Also, if it is heating up fast, it could be old fluid. Have you tried flushing the fluid and replacing yet? If it hasn't been replaced or hasn't been replaced in a long time, I'd recommend flushing all the old out rather than just draining and filling (which will mix a handful of quarts of old with the new).
Old fluid can lose its ability to cool and lubricate. The transmission slipping or not having the proper pressures due to fluid leaking through damaged seals or the pump failing could also cause it to heat up more than normal.
Do you have any type of transmission cooler on it?
I ended up trying multiple valve bodies and extra cooling, but have now reached the point where I'm going to have the CVT rebuilt. I had problems with at least one of the replacement valve bodies, but I'm not getting enough pressure on the primary pulley now and it is starting to throw other speed sensor codes that I believe aren't truly what is wrong. I think too much heat did too much damage and the valve body route wasn't enough for me.
Replacing just the valve body could be enough for you, but only one way to find out. Definitely flush the fluid and clean the magnets in the transmission pan
before you put a new valve body on it, so you don't contaminate the new one.
If I had to make a wild guess, it would be that old fluid got too hot and cooked some things. If it drives better when the temps are cooler, then it might not be too late and they are just failing due to extreme temperatures. You could replace the fluid and it could drive better. If the damage is permanent and severe enough, then you might get by with replacing the valve body and still drive it, assuming most of the problems are in the valve body parts. If it still wants to heat up too much, after doing both those things, then you could try adding an external cooler, but that's not going to buy you much. At that point, most likely you'll need to have the CVT replaced. Again, these are just guesses.