GPU Advice - RAM vs Other Specs

Hello!

I am currently working on a film in Unreal using my GTX Titan. It has 12GB RAM but it’s not RTX enabled so I need to upgrade at this point if I want to raytrace as I’m currently getting texture pool overflows and it’s slowing down my work flow with occasional crashes. I don’t care about performance, except regarding my ability to edit functionally.

My initial thought was to get an RTX 2080TI but that has 11GB of RAM or alternatively bite the bullet on an RTX Titan.

Just curious what people will see as advantages and disadvantages of these two options. It’s hard to tell as every comparison chart is in relation to gaming and not 3D animation/editing.

If I get the 2080TI will the -1 GB Ram hurt a lot or will the other specs more than account for everything else?
Will I see a massive difference with the titan that warrants an additional $1500?

Thanks for any advice!