Markdown render is very slow and sometime finish by an error 502

Summary

I wrote an instructions file for my developers with markdown, it's a 'heavy' file (48ko - 1000 lines) with a lot of tables and links to image. Before, no trouble to use this file, but recently the render take a long time and sometime finish by an error 502.

Steps to reproduce

Write an 'heavy' file (48ko - 1000 lines) with a lot of tables. (for example copy paste this code until 1000 lines)

# hello 

## service 

<table>
<tr><th> header parameter </th><th> optional </th><th> conditinal </th><th>  type </th><th> regular expression </th><th> description </th></tr>
<tr><td> os </td><td> no </td><td>  </td><td>  string </td><td> `(android&#124;ios))` </td><td> `android`, `ios` (static value) </td></tr>
<tr><td> os </td><td> no </td><td>  </td><td>  string </td><td> `(android&#124;ios))` </td><td> `android`, `ios` (static value) </td></tr>
<tr><td> os </td><td> no </td><td>  </td><td>  string </td><td> `(android&#124;ios))` </td><td> `android`, `ios` (static value) </td></tr>
<tr><td> os </td><td> no </td><td>  </td><td>  string </td><td> `(android&#124;ios))` </td><td> `android`, `ios` (static value) </td></tr>
<tr><td> os </td><td> no </td><td>  </td><td>  string </td><td> `(android&#124;ios))` </td><td> `android`, `ios` (static value) </td></tr>
<tr><td> os </td><td> no </td><td>  </td><td>  string </td><td> `(android&#124;ios))` </td><td> `android`, `ios` (static value) </td></tr>
<tr><td> os </td><td> no </td><td>  </td><td>  string </td><td> `(android&#124;ios))` </td><td> `android`, `ios` (static value) </td></tr>
</table>

Expected behavior

Can you optimize the markdown render? Allocate more memory or CPU?

(I try on github this file... render is immediate : https://github.com/idemobi/testMarkdownRender/blob/master/README.md)