My laptop GPU is a NVIDIA GEFORCE GTX 150 Ti, 12154 MB total memory, and also it is slow even with proxies, once I add more than about 10min of (4k) footage that is. Is this normal?
What would a recommended GPU be?
I'm on Windows and DaVinci Resolve 14, Intel Core i7, 16GB RAM (would 32 help?)
In Resolve the CPU is used to run the app, disk I/O and compression and decompression of codecs. Resolve does all its image processing in the GPU on the graphics card. More CUDA/OpenCL Cores are better.
4K/UHD have 4 times the pixels of Full HD and require much stronger CPU and a GPU with much more CUDA/OpenCl performance and Video ram.
Suggest you have a look at the DaVinci Resolve 15 Configuration Guide: