This video by Sam Ben-Yaakov explains a simple trick how to make LTspice time base split equally.
LTspice simulation core function is not using equal time base sampling. The sampling time interval is set depending to the actual plot behaviour trying to be shorter / more accurate in transient time and idle in the area of stable operation to save time and computing power. However, in some cases you may need to model the circuit behaviour with equal time domain sampling. This video explains how to achieve it with relatively simple trick using FFT function.