http://www.amd.com/en-us/products/memory/ramdisk
There is a free version. The EQ folder is less than 4GB so the free version will work. And, you can slim down the EQ folder even more by deleting zone files that don't exist in P99.
I had this problem even with an SSD (fast NAND, not crappy). WinEQ2 fixed a lot of stuff, then that AMD Ramdisk cleared everything up.