To test this properly, set up your computer to boot more than one version.
http://wiki.tinycorelinux.net/wiki:updateBoot it using different versions, with the same apps.
Time the boot with a clock, to see how long it really takes.
I have noticed that loading apps on my computer takes longer than it did before.
This may have started around the time I started using version 3.7.
Around the same time, I also installed additional apps, and I had been thinking those apps were taking longer than the others.
You can test to find out.