I have some 64-channel EEG data, which has been pre-processed, and I can browse the waveform normally. Now I want to view the topographic map at a certain moment, but it takes more than 1 second to generate, and I need to wait every time I switch to other moments. How can I increase the speed of plot_topomap？
import mne
evoked = mne.EvokedArray(data)
evoked.plot_topomap() # wait long time