There is no way to determine whether this memory dysfunction is due to your surgery or your TBI. They can also be from the anesthesia. Chemo brain is common from anesthesia. Between all three, you have plenty of reasons for memory and processing difficulties.

I have learned to not look at objects near the car as it moves. It is just too fast for my brain. My processing speed has been diagnosed at 10 to 25% of normal.

I have never seen any improvement. Learning to focus farther from the moving vehicle is much easier on my brain.

There is also a specific part of the brain that ties visual images to names. This area can be damaged with little chance for recovery.

Try to learn to work with your dysfunctions rather than fighting against them. Your life will be much easier.

My best to you.