Guys u can look at my Mod All-in-One RT Performance Tweaks:
https://www.nexusmods.com/witcher3/mods/7979
Greatly Improves both CPU and GPU performance with up to 50% FPS boost compared to Vanila RT performance mode.

New video added with FPS comparison:
https://m.youtube.com/watch?v=do5SxcsB5xM

Released Version 1.1

~ Fixed Crash after/before cutsceens, reduced time to update RT GI after load/cutscreen/Fast travel + few small RT tweaks

Unfortunately update 4.02 did not fix the memory leak issue. However, they improved the operation of the game itself and finally added HBAO+, the performance is now up to about 30% higher than in was in 4.01.

I have released my mod updates to version 1.2 to be compatible with patch 4.02. Still with the mod, performance is higher than 4.02, by about 20%. No need to use RTXGI Unclocker anymore, more details in mod description above.

I released another mod update to version 1.3,
I didn't expect RTXGI Unlocker to be updated so quickly (before that, we waited several weeks for it). Thanks to it, I was able to restore the mod's OptimizedRT modifications, but as I expected, CDPR implemented it almost entirely in patch 4.02, although it still increases performance by 5-7%, it's not a difference of several dozen % as before the patch, but thanks to that my mod now allows to increase the performance to approx. 25% over vanilla 4.02.
In addition, I fixed the flashing dynamic shadows in some places in the game that were visible in version 1.2 of my mod.
For its correct works, you need to use RTXGI Unlocker DLL again, more information is included in the description of my mod.

Just added Video with Compare 4.02 update performance to 4.01 and to my Mod, In short, nothing much has changed for us, just few FPS more:
https://www.youtube.com/watch?v=5Qf_fNpGVcI

Released Version 2.0

New 2.0 version is avaiable !I have manage to significantly improved RT load time after game load (Game no longer scares with the lack of any lighting after loading save) while maintaining the smillar high performance as in version 1.3. The visual quality of RT is overall smillar or even better to what it was in 1.3, especially in close spaces areas. I'm waiting for yours feedback, go check it out ! =D
https://youtu.be/nDuP8Kg7Hh0

Here is my new Update for All in One RT Tweak Mod:

https://www.nexusmods.com/witcher3/mods/7979

in short up to 50% FPS boost compared to Vanilla 4.02 Update, check out =)