Question Row Refresh Cycle Time higher and Command Rate changed after upgrade

[Gekko88]

I have recently upgraded the RAM from 10 GB to 14 GB by adding a 4 GB module to the 6th and only empty slot.
Sadly, the Row Refresh Cycle Time has gone up from 59 to 86 and the Command Rate went from 1T to 2T.

How much does that slow down the computer? As I do not "really need" that much RAM, am I better off removing
that module again?

Before the upgrade:

After the upgrade:

 

[R_1]

when you mix ram you are taking a gamble.
in your case you are forcing faster RAM to slow down to the slowest link in the chain.
imagine a convoy on the road, in the front is a VW beetle from the 50's and all the cars behind are newer. all the new cars can only go as fast as the bug. get rid of the bug and the convoy can go as fast as the next slowest car in the convoy which is now in the lead. not an exact analogy but it works.

the new stick is large but slow, slow enough to force every other stick to slow down too. if the RAM did not do this instability would result.

as to how much that hurts, benching would answer that far more than a guess by me.
https://www.passmark.com/products/pt.htm

PassMark Software - Memory Benchmark Charts