Light through glass render slightly noisy and absurdly slow



I was hoping someone could help me figure out how to fix this noisy light shining through a frosted glass problem. It seems that the rest of my scene needs many less samples to be clean and noise-less than that specific area. Becaus of this reason i turned on adaptive sampling and cranked samples to 7000 hoping it would solve the problem. However I am still ending up with an ABSURD render time per frame of around 2 hours AND the light still is not as clear as i would want it. I have also turned on the denoiser.

If anyone has any idea why this is taking so long or has any kind of work around please let mek know! Any and all help is greatly appreciated.

Attached below is my c4d scene file with assets, an image depicting the noisy problem light render, and my kernel settings.

Hope this helps!

noisy render octane (201.3 MB)