>>106225321
This is the quant you're running? The quant of R1 I'm using is 302.5GB, although I have 88GB vram to offload to but it just acts as expensive ram when holding experts. My ram is 5200mhz like yours, doesn't make sense then that your speed is that much slower.
GLM has slightly less active params and Q4 is a bit faster than Q3.