O72 FasTrack switches need two 1-3/8" sections and your photo shows both of them in place. Unless you are going to get out a hacksaw and make modifications to some expensive FasTrack, you need to add something to makeup that 1-3/8". Normally we would just add a 1-3/8" section on the opposite side of the layout, exactly 180° away. Of course you do not need to keep perfect symmetry, but you do need to account for those extra pieces of track.
O72 FasTrack switches come with three 1-3/8" sections. Two have no roadbed on one side and they come preinstalled on the switches. The third section has no roadbed on either side and it should come separately in the box. it is used when you need to fit the switch side by side with another switch or a 22-1/2° crossover.
I am not familiar with Anyrail, but in SCARM the user is responsible to add the two 1-3/8" sections themselves even though the sections are necessary and they come preinstalled on the switches.
Here is what you need in your software in order to reflect reality:
Now, you can leave off every one of those 1-3/8" sections in the software and it will appear that you can make a perfect circle. But that will not work in reality as you have discovered.
