Matlab Hangs when Saving Surf to PDF

I am having trouble saving a surface plot as a pdf. This used to work for me just fine. However, now when I try, Matlab hangs up and my disk usage jumps to 100%. What is causing this?

    clear
    close all
    savepath = 'C:\Users\';
% Image Sizing
    japw = 3 + 3/8;
    Y = 11;
    X = 8.5;
    XX = 0.5*X;
    YY = 0.2*Y*japw/XX;
    XX = japw;
    PX = 0;
    PY = 0;
%surface data (arbitrary)
    x = (0:10);
    y = (0:10);
    nX = length(x);
    nY = length(y);
    xMat = repmat(x.',1,nY);
    yMat = repmat(y,nX,1);
    z = xMat.^2 + yMat.^2;
%plot data
    f = figure(305);
    hsurf = surf(x,y,z);
    xlabel('X','fontsize',30,'interpreter','latex')
    ylabel('Y','fontsize',30,'interpreter','latex')
    shading interp
    set(hsurf,'EdgeColor','interp')
    colorbar
    set(gcf,'color','white')
    set(gcf,'PaperUnits','inches')
    set(gcf,'PaperPosition', [PX PY X Y/2])
    set(gcf, 'PaperSize',[X Y/2])
    set(gca,'Position', [0.15 0.22 0.7 0.7])
    set(gca,'FontSize',20)   
    view(0,90)
    saveas(gcf,[savepath 'test3.pdf'])

[Benjamin Kraus]

What version of MATLAB are you using? There have been significant changes in this area starting in R2014b. You said it used to work, what version of MATLAB did it used to work in?

[Christopher Saltonstall]

It used to work on this PC (Windows 10) with this Matlab version (2016b).

[Christopher Saltonstall]

Also, it works fine when saving any other format, e.g., tiff, png.