Question: how to improve these 3 issues in Maple's plot3D?

Maple's plot3d makes nice plots, but it is not quite polished enough I feel.

When I compared the same plot with what I get with Mathematica, I found these 3 issues shown below. I am not too good in Maple, so I am not able to see how to improve on this any more.

The Maple code is

restart;
f:=-x^4-2*y^4+14*x^2*y^2/5:
plot3d(f, x=-5..5,y=-5..5,
   axes     = boxed,
   axesfont = [Times,default,10],
   axis[1]  = [tickmarks=[3,subticks=5]],
   axis[2]  = [tickmarks=[3,subticks=5]],
   axis[3]  = [tickmarks=[3,subticks=5]],
   labeldirections = [horizontal, horizontal, horizontal],	
   labels   = ['x', 'y', 'z'],
   scaling  = unconstrained) 

Compare to Mathematica's output

f = -x^4 + (14*x^2*y^2)/5 - 2*y^4; 
Plot3D[f, {x, -5, 5}, {y, -5, 5}, 
 AxesLabel -> {"x", "y", "z"}, 
 PlotRange -> All, 
 BoxRatios -> {1, 1, 1}, ImageSize -> 400]

Another major limitation in Maple's plot3d, is that it does not support `BoxRatios` like option. I asked about this years ago and got help on it, but nothing very satisfactory to use in geneal.

https://www.mapleprimes.com/questions/217092-How-To-Change-box-Ratio-Or-3D-Aspect

I hope Maplesoft can improve on this in next version.

Any suggestion how to improve the above 3 issues for now? The ticks issues for me seems the most annoying, becuase they keep moving around as I rotate the 3d plot.

Maple 2020 on windows 10