NFS calls versus badcalls

rndnvn

Have Redhat Enterprise as server on a VM in ESXI7.
Has been running for a while.
Some latency, and at times, damaged files made me suspect an issue.
I ran nfsstat -r in the server terminal, and got this:

call: 35000020
badcalls: 258
badfmt:0
badauth:0
badclnt:0

Is this ok?
Could it be better?
If so, what should I look into to improve things^

Thank in advance for any suggestions.

rndnvn

Later on badcalls climbed in number:
Calls 173.879.040
badcall: 35962
badFMT: 35938
badauth: 24

As I was managing the server resources, I suspected VM Redhat Enterprise Linux in need of more power. I increased its CPU and RAM.
No more badcalls since.

It might help someone else in same situation.