OpenCore Windows boot + not working AppleTV+

[cretans]

Hi, I succesfuly managed to upgrade to Big Sur (using openCore 0.63), straight from Catalina through App Store. I'm using a iMac 19,1 SMBIOS and I m having issues with AppleTV+ (not playing).
I used the suggested shikigva=80 hack, witch worked ok with Catalina but now nothing. Is anyone else having the same issue? is there any solution?
Im also experiencing some weird problems with multi boot. I used open core boot loader to boot into my windows SSD and all worked ok. Unfortunately I can't do that now, it starts loading windows and after 2-3 seconds it reboots. Im using different SSD's for windows and Osx. I also had this problem when I tried to install Big Sur, after the first reboot, openCore picked up the right volume to update, only to reboot imidiatelly and thus falling into a loop. I had to use my original Catalina usb (OpenCore) installer just to boot into Big Sur installer, after that everything worked. but as I said so, I can't boot into windows anymore.
Is anyone having the same issues? Any suggestion?

 

[gbailey4]

Don't think it works in Big Sur: https://dortania.github.io/OpenCore-Post-Install/universal/drm.html

 

[cretans]

Thanks for replying, it’s not truly the case since with smbios iMacPro 1.1 (maybe at hers too) drm is working. But I don’t want to use a smbios not compatible with my cpu (although I don’t really now If it would be a problem using an smbios not so close with your system). I hope there will be a fix soon.
Anything about my windows boot problem?