Losing wkg

Anyone got the answer to this…
When riding i could hit 7 or 8 wkg but in my ride summary, after I finish, max is shown less than 4 wkg. I use a tacx neo so could this this a set up problem?

Thanks in advance

How long can you hold 7-8 W/KG?
If it is only briefly, it may not be long enough.

Hi Tim good point. At best 20 seconds or so sprinting does that qualify ? Cheers Gary

I would think so but I would defer to more knowledgeable users why that is.
I have seen momentary watt readings that didn’t get recorded.