your fabric movement is faster than the needle causing the needle to strike the plate because it is still in the fabric as you are moving it. I have had the same problem.
a while back i had the chance to watch someone closely while she FMQ. I noticed she moved the fabric slow while the needle went fast. I was trying to do both fast with iffy results. Once i slowed my movement down and kept my shoulders relaxed I did much better. I also lowered my sewing table just a bit so I didn't scrunch up my shoulders. worked much better.
also make sure the thread isn't hanging up on the spool anywhere. I have taken a knife or file to smooth any burrs i find on my spool