3.5 nozzle on Taz 5 Layer question

Hi folks. So, I decided to try a 3.5 nozzle, and so far, so good (test prints only), but one problem I’ve been having is that the filament lines have a fair amount of space between them, and the first layer is not fusing to the second. Overall, when a print is complete, it looks fine, and my perimeters are super clean.

I’m printing with eSun PLA+, .1 layer height, between 205-215 deg., fan 100% at layer 2, speed 80. (first layer 50% speed)

Image attached (sorry for the blurriness)