A320 Neo V1, VR, V2, VAPP, VLS Speeds

Using the Xbox version on the Series X. My issue very well could be user error as I have searched other topics and didn’t see anything similar.

The MCDU calculated speeds appear to be much too fast.

v1 = 149
vr = 154
v2 = 157
vapp = 158
vls = 153

zfw = 62.1
tow = 68.7
lw = 68.7

I know there are significant limitations in the programming of the MCDU in the stock a320neo and it appears the MCDU makes multiple in-proper calculations in general such as the lw being the same as the tow?

In using the FS Tools Performance Calculator I get more reasonable feedback, as much as 20kt lower than the MCDU.

Age old questions, is it the SIM, or is it me?